CDUS46 KSEW 190117 CLISEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 617 PM PDT MON MAY 18 2026 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 18 2026... VALID TODAY AS OF 0500 PM LOCAL TIME. CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1945 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 66 346 PM 89 1958 67 -1 62 MINIMUM 46 512 AM 37 1950 49 -3 45 2003 AVERAGE 56 58 -2 54 PRECIPITATION (IN) TODAY 0.00 0.72 2005 0.06 -0.06 0.00 MONTH TO DATE 0.49 1.15 -0.66 0.36 SINCE OCT 1 33.94 33.98 -0.04 26.87 SINCE JAN 1 17.16 18.04 -0.88 13.47 SNOWFALL (IN) TODAY 0.0 MM MM 0.0 MONTH TO DATE 0.0 0.0 SINCE OCT 1 3.0 2.3 SINCE JUL 1 3.0 2.3 SNOW DEPTH 0 DEGREE DAYS HEATING TODAY 9 7 2 11 MONTH TO DATE 130 160 -30 171 SINCE MAR 1 1086 1129 -43 1098 SINCE JUL 1 3836 4176 -340 4255 COOLING TODAY 0 0 0 0 MONTH TO DATE 6 0 6 0 SINCE MAR 1 6 1 5 0 SINCE JAN 1 6 1 5 0 ................................................................... WIND (MPH) RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (190) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (270) AVERAGE WIND SPEED 5.0 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 86 700 AM LOWEST 41 400 PM AVERAGE 64 .......................................................... THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 6788 1963 MINIMUM TEMPERATURE (F) 49 38 1975 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 529 AM PDT SUNSET 843 PM PDT MAY 19 2026...........SUNRISE 527 AM PDT SUNSET 845 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$